[2020] When do the daily ops change? Same as the challenges?

It looks like these are currently changing at 1pm ET (about one hour from this comment.) We are looking into adjusting this timing going forward so that Daily Ops will change one hour earlier (at 12pm ET each day) to be in line with other aspects of the game that change regularly (Challenges, Atomic Shop updates, Double XP Event start/end times, etc.)